Cabezas Pizarro, Hannia. “Effect of the Application of Behavioral Therapy in the Acquisition of Basic Skills Learning in Three Children With Autism”. Revista Educación - Journal of Education 28, no. 1 (October 1, 2004): 133–143. Accessed May 17, 2024. https://www.revistas.ucr.ac.cr/index.php/educacion/article/view/2824.